Long Yi Chang 185mm Deba Bocho Knife with Yasuki Yellow Paper #2 Steel and Single Bevel Design for Fish Butchery

The Long Yi Chang Deba Bocho is a traditional Japanese single-bevel fish knife, forged from authentic Yasuki Yellow Paper #2= high-carbon steel.

Designed for professional fish butchery, it excels at breaking down whole fish, removing heads, and cutting through bones and cartilage—while preserving the delicate texture of sashimi-grade fish.

With a reinforced spine, hand-forged blade, and ergonomic octagonal handle, this knife balances raw cutting power with surgical precision, trusted by chefs and serious home cooks alike.

• Steel Type: Hitachi Yasuki Yellow Paper #2 (Kinpaku #2) high-carbon steel
• Hardness: 62±2 HRC for exceptional edge retention
• Advantage: Pure carbon composition enables ultra-sharp edges and easy resharpening—ideal for heavy-duty fish processing

• Spine Thickness: ~7.6mm for bone-cutting strength
• Single Bevel (Kataba 片刃): 15°±1° primary bevel ensures clean, controlled cuts without tearing fish flesh

• Tsuchime : Textured surface reduces drag and prevents fish skin from sticking
• Hand Tapering: Removes machine marks, creating a smooth, efficient cutting stroke

• Material: Hackberry wood with black ox horn ferrule
• Shape: Anti-slip octagonal profile for stability
• Weight: Balanced weight (360g±5g) reduces wrist fatigue during extended butchery

Every knife is handcrafted by artisans with decades of expertise:

1. Forging & Lamination: Yellow Paper #2 core clad with low-carbon steel, hand-forged into the Deba shape
2. Heat Treatment: Precise quenching and tempering for optimal hardness and toughness
3. Hand Grinding & Polishing: Gradual thinning to single-bevel geometry with mirror-finish edge
4. Final QC: Strict inspection ensures performance and safety standards

1. Hand wash only; avoid soaking
2. Dry immediately and thoroughly
3. Store in a dry, ventilated area; use a wooden sheath or knife block
4. Sharpen with Japanese water stones (1000+ grit); avoid electric sharpeners
5. Apply food-safe mineral oil periodically to prevent oxidation